Finding the Fourth Proportional to 2,117.52, 3,176.76 and 656.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,117.52 : 3,176.76 = 656.56 : x
2. Step 2: Convert to fraction form
   2,117.52/3,176.76 = 656.56/x
3. Step 3: Cross multiply
   2,117.52x = 3,176.76 × 656.56
4. Step 4: Simplify right side
   2,117.52x = 2,085,733.55
5. Step 5: Solve for x
   x = 2,085,733.55/2,117.52
6. Step 6: Final answer
   x = 984.99